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What should I do if the gasket of the plate heat exchanger is broken? _Plate heat exchanger gasket price_Plate heat exchanger manufacturer_

by:DIGUANG     2021-04-23
What should I do if the gasket of the plate heat exchanger is broken?

2019-05-16 10:41
781 Everyone knows that the plate heat exchanger is a kind of equipment with high heat transfer efficiency. It is easy to install and clean, flexible to operate, and has low heat loss. It is widely used in all walks of life. The plate heat exchanger is mainly composed of plates and sealing gaskets, but in the process of long-term use, the plate heat exchanger gaskets will also be damaged. What is the cause? How to deal with it? The answer is given below: For plate heat exchangers, elastic seals such as nitrile rubber (NBR) or ethylene propylene diene monomer (EPDM) are usually used. The heat exchanger sealing ring also has aging problems, which will cause its performance to gradually decrease until it loses its function. The elastic properties will gradually be eroded due to thermal and chemical reasons, coupled with the influence of various other factors, accelerate the aging process of the sealing ring. It may be affected by pressure, and when the plate heat exchanger can be disassembled and used in the rated working pressure, leakage occurs. In addition to the quality factors of the device in the manufacturing and assembly, it is generally related to the abnormal impact load in the system. This is a situation that is not easy for ordinary operators to check. The instantaneous pressure peak caused by the impact is often about 2 times higher than the normal working pressure, which displaces the rubber gasket installed in the plate heat exchanger and makes the plate heat exchanger seal failure. Because the heat transfer element of this type of device is made of stainless steel sheet, its sealing rigidity is relatively poor, and the sealing periphery is very long, so the impact resistance performance is lower than that of the shell-and-tube heat exchanger. It is also possible that the equipment used or idle for several years may be affected by time. The aging of the sealing material may affect the reliability of the sealing. Therefore, the maintenance opportunity should be used to replace the new sealing gasket in time. It may be affected by temperature. Rapid changes in temperature can also lead to seal failure. When the temperature changes quickly, the linear expansion coefficient and elastic deformation of the rubber gasket and the seal pre-tightening force will not match, making the seal pre-tightening The force is reduced, resulting in the pressure bearing capacity of the device much lower than the rated design pressure. The above are the reasons for the damage of the plate heat exchanger gasket and the corresponding treatment methods. If you want to know more about the plate heat exchanger gasket, please pay attention to the official website of Diguang!
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